linux-kernel - [RFC PATCH 3/9] security/fbfam: Use the api to manage statistics

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Message-Id: <20200906152247.7149-1-john.wood@gmx.com>
Date:   Sun,  6 Sep 2020 17:22:47 +0200
From:   John Wood <john.wood@....com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     John Wood <john.wood@....com>
Subject: [RFC PATCH 3/9] security/fbfam: Use the api to manage statistics

Use the previous defined api to manage statistics calling it accordingly
when a task forks, calls execve or exits.

Signed-off-by: John Wood <john.wood@....com>
---
 fs/exec.c     | 2 ++
 kernel/exit.c | 2 ++
 kernel/fork.c | 4 ++++
 3 files changed, 8 insertions(+)

diff --git a/fs/exec.c b/fs/exec.c
index a91003e28eaa..b30118674d32 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -71,6 +71,7 @@
 #include "internal.h"

 #include <trace/events/sched.h>
+#include <fbfam/fbfam.h>

 static int bprm_creds_from_file(struct linux_binprm *bprm);

@@ -1940,6 +1941,7 @@ static int bprm_execve(struct linux_binprm *bprm,
 	task_numa_free(current, false);
 	if (displaced)
 		put_files_struct(displaced);
+	fbfam_execve();
 	return retval;

 out:
diff --git a/kernel/exit.c b/kernel/exit.c
index 733e80f334e7..39a6139dcf31 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -67,6 +67,7 @@
 #include <linux/uaccess.h>
 #include <asm/unistd.h>
 #include <asm/mmu_context.h>
+#include <fbfam/fbfam.h>

 static void __unhash_process(struct task_struct *p, bool group_dead)
 {
@@ -852,6 +853,7 @@ void __noreturn do_exit(long code)
 		__this_cpu_add(dirty_throttle_leaks, tsk->nr_dirtied);
 	exit_rcu();
 	exit_tasks_rcu_finish();
+	fbfam_exit();

 	lockdep_free_task(tsk);
 	do_task_dead();
diff --git a/kernel/fork.c b/kernel/fork.c
index 4d32190861bd..088aa5b62634 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -107,6 +107,8 @@
 #define CREATE_TRACE_POINTS
 #include <trace/events/task.h>

+#include <fbfam/fbfam.h>
+
 /*
  * Minimum number of threads to boot the kernel
  */
@@ -941,6 +943,8 @@ static struct task_struct *dup_task_struct(struct task_struct *orig, int node)
 #ifdef CONFIG_MEMCG
 	tsk->active_memcg = NULL;
 #endif
+
+	fbfam_fork(tsk);
 	return tsk;

 free_stack:
--
2.25.1